Glossary
Quantum SuperLoader 3A Series User’s Guide
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capacity and performance in the same footprint. See backward
compatibility.
SDLT
Super Digital Linear Tape.
seek
The movement of a read/write head to a specific data track.
self-cleaning head
Found in all DLT tape drives. Tiny ridges on either
side of the DLT drive read/write head continuously wipe the
tape clean as it passes over the head. This is why there is no
periodic cleaning prescribed for DLT tape drives.
server
A powerful computer system with a large capacity tape or hard
disk drive that serves the information access and communication
needs of multiple users.
shelf life
T
he length of time that media can be stored without losing its
magnetic strength. For Super DLTtape II media, this period is 30
years or more.
shock rating
A rating, expressed in Gs which stands for multiples of
gravity, of how much shock a tape drive can sustain without
damage. Operating and non-operating shock levels are usually
specified separately.
SITE
This command is used for site-specific commands. Compliant to
FTP norm.
SMTP
Simple Mail Transfer Protocol. An e-mail protocol on the Internet
that defines the message format and the message transfer agent.
SNMP
Simple Network Management Protocol. A protocol that monitors
and controls a network.
SNTP
Simple Network Time Protocol. SNTP is based on NTP, the
Network Time Protocol, an industry standard way for computers
to synchronize their time to an external reference standard. NTP
and SNTP are fully interoperable. Each consists of a client, for
example the SuperLoader, which obtains the current time (in
UTC) from either an SNTP server or an NTP one. SNTP and NTP
are in wide use on the Internet. NTP is specified by RFC1305.
SNTP is specified by RFC2030.
soft error
A faulty data reading that does not recur if the same data is
reread from the disk or corrected by ECC. Usually caused by
power fluctuations or noise spikes.
SRAM
S
tatic RAM. A memory chip that requires power to hold its
content.